液晶显示直下式激光背光源微结构光纤的设计与研究

Design of Microstructure Fiber for Direct Down Laser Backlight of Liquid Crystal Displays

设计并研究了外置半导体激光器+内置微结构光纤的方案,使光纤侧面发光,从而解决了传统直下式液晶模组需要使用大量发光二极管芯片及内置半导体激光器方案模组体积过大的问题。模拟分析了不同的深度、半径和微结构数量对光纤光场的影响,得到峰值照度为32650 lx、水平可视角为85°、垂直可视角为84°33′35″的光场,达到了LCD显示行业的10000 lx背光源峰值照度、60°水平可视角、50°垂直可视角的要求,为半导体激光应用于LCD直下式显示领域提供一种新的方法。

The scheme of an external semiconductor laser with built-in microstructure fiber is designed and studied to achieve fiber-side lighting. This scheme solves the problems associated with traditional direct down liquid crystal modules:these require a large number of light-emitting diode chips,and the volume of the built-in semiconductor laser scheme is too large. The effects of different depths,radii,and the number of microstructures on the optical field are simulated and analyzed. Light field with a peak illumination of 32650 lx,a horizontal viewing angle of 85°,and a vertical viewing angle of 84° 33′35″is obtained. These values meet the requirements of the liquid crystal display(LCD)industry for achieving a peak backlight illumination of 10000 lx,a horizontal viewing angle of 60°,and a vertical viewing angle of 50°. The proposed scheme provides a new method for applying semiconductor lasers in the field of LCD display.